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Casting Nanoporous Platinum in Metal-Organic Frameworks

Author:
Gao, Xiang  Pei, Xiaokun  Gardner, David W.  Diercks, Christian S.  Lee, Seungkyu  Rungtaweevoranit, Bunyarat  Prevot, Mathieu S.  Zhu, Chenhui  Fakra, Sirine  Maboudian, Roya  


Journal:
ADVANCED MATERIALS


Issue Date:
2019


Abstract(summary):

Nanocasting based on porous templates is a powerful strategy in accessing materials and structures that are difficult to form by bottom-up syntheses in a controlled fashion. A facile synthetic strategy for casting ordered, nanoporous platinum (NP-Pt) networks with a high degree of control by using metal-organic frameworks (MOFs) as templates is reported here. The Pt precursor is first infiltrated into zirconium-based MOFs and subsequently transformed to 3D metallic networks via a chemical reduction process. It is demonstrated that the dimensions and topologies of the cast NP-Pt networks can be accurately controlled by using different MOFs as templates. The Brunauer-Emmett-Teller surface areas of the NP-Pt networks are estimated to be >100 m(2) g(-1) and they exhibit excellent catalytic activities in the methanol electrooxidation reaction (MEOR). This new methodology presents an attractive route to prepare well-defined nanoporous materials for diverse applications ranging from energy to sensing and biotechnology.


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